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Investments - Additional Information (Detail) - USD ($) | 6 Months Ended |
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Jun. 28, 2025 | Dec. 28, 2024
Debt Securities, Available-for-sale [Line Items] |  |
Investments maximum maturity period | 5 years |
Unrealized gain (loss), net of unrealized gains/losses, on the investments in the bond portfolio | $ (1,603,000) | $ (3,573,000)

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